f957a57ad8
Another Elisp library that I wrote during my manic experience of switching to EXWM. Change-Id: I652f5c7228332a7f5822bd408a0c0be8f7bc4b4f Reviewed-on: https://cl.tvl.fyi/c/depot/+/6018 Tested-by: BuildkiteCI Reviewed-by: wpcarro <wpcarro@gmail.com> Autosubmit: wpcarro <wpcarro@gmail.com>
63 lines
1.6 KiB
EmacsLisp
63 lines
1.6 KiB
EmacsLisp
;;; math.el --- Math stuffs -*- lexical-binding: t -*-
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;; Author: William Carroll <wpcarro@gmail.com>
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;; Version: 0.0.1
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;; Package-Requires: ((emacs "24.3"))
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;;; Commentary:
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;; Containing some useful mathematical functions.
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;;; Code:
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Dependencies
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(require 'dash)
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(require 'maybe)
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(require 'cl-lib)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Constants
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defconst math-pi pi
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"The number pi.")
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Functions
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; TODO: Support all three arguments.
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;; Int -> Int -> Int -> Boolean
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(cl-defun math-triangle-of-power (&key base power result)
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(cond
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((-all? #'maybe-some? (list base power result))
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(error "All three arguments should not be set"))
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((-all? #'maybe-some? (list power result))
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(message "power and result"))
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((-all? #'maybe-some? (list base result))
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(log result base))
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((-all? #'maybe-some? (list base power))
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(expt base power))
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(t
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(error "Two of the three arguments must be set"))))
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(defun math-mod (x y)
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"Return X mod Y."
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(mod x y))
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(defun math-exp (x y)
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"Return X raised to the Y."
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(expt x y))
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(defun math-round (x)
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"Round X to nearest ones digit."
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(round x))
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(defun math-floor (x)
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"Floor value X."
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(floor x))
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(provide 'math)
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;;; math.el ends here
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